@egotraumatic see there: rails weblog is worth to subscribe

The forthcoming 3.2.x release series will be the last branch of Rails that supports Ruby 1.8.7. There’s a new 3-2-stable branch in git to track the changes we need until 3.2.0 final is release and for managing point releases after that. So for now you should stop floating on rails/master if your application is not compatible with Ruby 1.9.3. We have updated the version numbers to indicate this backwards incompatibility to be 4.0.0.beta. This doesn’t mean that 4.0 is anywhere close to being released, mind you. We’re simply doing this now because we’re dropping support for Ruby 1.8.7 in rails/master and people should know what’s up. Major versions of Rails has been on about 2-year release cycle since 1.0 (released in 2005 , followed by 2.0 in 2007 , followed by 3.0 in 2010 ) and we intend to continue this pattern. The current internal target for Rails 4.0 is sometime in the ...